Sneaking (#237)

* start implementing sneaking

* fix horizontal_collision being inverted and cleanup

* clippy

* change dimensions and eye height based on pose

* proper support for automatically crouching in certain cases

* fix anticheat issues

* add line to changelog and update a comment

2 files changed, 7 insertions, 3 deletions

diff --git a/azalea-core/src/cursor3d.rs b/azalea-core/src/cursor3d.rs
index dc96d890..91a14000 100644
--- a/azalea-core/src/cursor3d.rs
+++ b/azalea-core/src/cursor3d.rs
@@ -71,13 +71,13 @@ impl Cursor3d {
     pub fn new(origin: BlockPos, end: BlockPos) -> Self {
         let width = (end.x - origin.x + 1)
             .try_into()
-            .expect("Impossible width.");
+            .unwrap_or_else(|_| panic!("Impossible width, origin: {origin:?}, end: {end:?}"));
         let height = (end.y - origin.y + 1)
             .try_into()
-            .expect("Impossible height.");
+            .unwrap_or_else(|_| panic!("Impossible height, origin: {origin:?}, end: {end:?}"));
         let depth = (end.z - origin.z + 1)
             .try_into()
-            .expect("Impossible depth.");
+            .unwrap_or_else(|_| panic!("Impossible depth, origin: {origin:?}, end: {end:?}"));
 
         Self {
             index: 0,
diff --git a/azalea-core/src/math.rs b/azalea-core/src/math.rs
index 105069ef..e62a3d23 100644
--- a/azalea-core/src/math.rs
+++ b/azalea-core/src/math.rs
@@ -92,6 +92,10 @@ pub fn sign_as_int(num: f64) -> i32 {
     if num == 0. { 0 } else { num.signum() as i32 }
 }
 
+pub fn equal(a: f64, b: f64) -> bool {
+    (b - a).abs() < 1.0e-5
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;